The Great Courses

Few global challenges touch humanity with as much immediacy or ubiquity as cancer. Over the course of their lifetime, one in three people in North America, Europe, and Australia will develop a malignancy, and in the United States alone, the direct and indirect costs of cancer amount to billions of dollars a year. The sad truth is that almost every family in the Western world will be affected by cancer at some point in their lives.

An invisible world of astonishing complexity is all around you. A world so small you can't see it with the naked eye. A world so crowded that its population staggers the mind. A world in which you participate every day—often without even knowing it.

You can learn about the stock market in many ways. But most people cannot afford to learn the wrong way—by making expensive mistakes. The stock market is a way for anyone to own the valuable assets of a company and, as investments, stocks historically have offered a good chance for long-term gains. If you own a well-diversified portfolio of individual stocks or stock funds, your wealth tends to grow when the economy grows. But too many investors succumb to the high-risk pursuit of beating the market by trying to pick winners, predict price trends, or otherwise find opportunities that other investors have missed.